MKN OPEHED Series User manual

Operating instructions
Cooker
Unit Type of en-
ergy
Unit type Model
Multi-plate cooker Electric Floor-standing unit OPEHED...
O7EHED...
HLEHED...
Countertop unit SLEKOH...
Translation from the original document • 2023201-20ABDE-- • 17/03/2016
2023201-20ABBE-- en-GB
To see the operating and display elements,
fold out the page.
Read the operating instructions prior to
commissioning
Operating instructions

Operating and display elements
1
2
3
4
6
5
0
1
2
3
4
6
5
0
1
2
3
4
6
5
0
1
2
3
4
6
5
0
1
2
3
4
6
5
0
1
2
3
4
6
5
0
b b b bb ba a aaaa
Image: Operating elements for cooker with 2, 4 or 6 hotplates
a Heat zone identification b Output control knob
Manufacturer
MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG
Halberstädter Strasse 2a
38300 Wolfenbüttel
Germany
Phone [phone]
Fax [phone]
Internet www.mkn.eu
Copyright
All rights to text, graphics and pictures in this documentation are held by MKN Maschinenfabrik Kurt
Neubauer GmbH & Co. KG. Distribution or duplication is only permitted with the prior written consent
of MKN.
Copyright by MKN Maschinenfabrik Kurt Neubauer GmbH & Co. KG.
2023201-20ABBE--
Operating instructions Operating instructions

Directory of contents
3Operating instructions
1Introduction......................................................................... 5
1.1About this manual ............................................................................ 5
1.1.1Explanation of signs ..................................................................................  6
1.2Intended use ..................................................................................... 7
1.3Warranty............................................................................................ 7
2Safety information.............................................................. 8
3Description of the unit ..................................................... 10
3.1Overview of the unit ....................................................................... 10
3.1.1Floor-standing unit...................................................................................  10
3.1.2Countertop unit........................................................................................  11
3.2Function of the operating and display elements......................... 11
3.3Output levels................................................................................... 11
4Operating the unit............................................................. 12
4.1Tips for use ..................................................................................... 12
4.2Switching the heat zone on and off.............................................. 12
4.2.1Switching on ............................................................................................  12
4.2.2Switching off ............................................................................................  12
4.3Basic functions............................................................................... 13
4.3.1Burning-in the hotplate ............................................................................  13
4.3.2Adjusting the output.................................................................................  14
5Pausing and end of use ................................................... 15
6Cleaning and caring for the unit ..................................... 16
6.1Preventing corrosion ..................................................................... 16
6.2Eliminating rust spots.................................................................... 16
6.3Cleaning the housing..................................................................... 17
6.4Cleaning the hotplate..................................................................... 17
6.5Performing a visual inspection ..................................................... 17
7Troubleshooting ............................................................... 18
7.1Cause of failure and the remedy................................................... 18
7.2Nameplate ....................................................................................... 18
8Carrying out maintenance ............................................... 19
9Disposing of the unit in an environmentally responsible
manner ................................................................................. 20
10Manufacturer's declaration............................................ 21
2023201-20ABBE--

Directory of contents
4 Operating instructions
2023201-20ABBE--

Introduction
5Operating instructions
1 Introduction
1.1 About this manual
The operating instructions are part of the unit and contain information:
•On safe operation,
•On cleaning and care,
•On remedies in case of faults.
Be aware of the following notes and adhere to them:
•Read the operating instructions completely before operating the
unit for the first time.
•Make the operating instructions available to the operator at all
times at the operating site of the unit.
•Insert any supplements from the manufacturer.
•Keep the operating instructions throughout the service life of the
unit.
•Pass on the operating instructions to any subsequent operator of
the unit.
Target group The target group of the instruction manual is the operator, who is
entrusted with the operation, cleaning and care of the unit.
Figures All figures in this manual are intended as examples. Discrepancies
between these and the actual unit can arise.
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Introduction
6 Operating instructions
1.1.1 Explanation of signs
DANGER
Imminent threat of danger
Failure to comply will lead to death or very severe injuries.
WARNING
Possible threat of danger
Failure to comply can lead to death or very severe injuries.
CAUTION
Dangerous situation
Failure to comply can lead to slight or moderately severe
injuries.
ATTENTION
Physical damage
Failure to comply can cause physical damage.
Notes for better understanding and operation of the unit.
Symbol / sign Meaning
•Listing of information.
Action steps, which can be performed
in any sequence.
1.
2.
Action steps, which must be performed
in the specified sequence.
Result of an action performed or addi-
tional information about it.
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Introduction
7Operating instructions
1.2 Intended use
This unit is intended to be used solely for commercial purposes,
particularly in commercial kitchens.
This unit may only be used with suitable accessories and for the
cooking of food.
It is forbidden to use the unit for purposes, which include the
following:
•Drying cloths, paper or dishes
•Heating acids, alkaline solutions or other chemicals
•Heating preserved food
•Heating flammable liquids
•Deep-frying
•Heating rooms
•Heating of warmer plates and GN containers
•Frying directly on the hotplate
•As set-down area or working surface
The use of the unit is prohibited in the following countries:
•USA
•Canada
1.3 Warranty
The warranty is void and safety is no longer assured in the event of:
•Improper conversion or technical modifications of the unit,
•Improper use,
•Incorrect startup, operation or maintenance of the unit,
•Problems resulting from failure to observe these instructions.
2023201-20ABBE--

Safety information
8 Operating instructions
2 Safety information
The unit complies with applicable safety standards. Residual risks
associated with operation or risks resulting from incorrect operation
cannot be ruled out and are mentioned specifically in the safety
instructions and warnings.
The operator must be familiar with regional regulations and observe
them.
Operation During operation, the following group of individuals must be
supervised by an individual who is responsible for safety:
•Individuals with physical, sensory, or mental handicaps, or who
lack the knowledge and experience to operate the unit properly.
The supervising individual must be familiar with the unit and the risks
associated with it.
Hot surfaces Risk of burns from hot surfaces
•Protect arms and hands by wearing suitable protective gloves.
•Do not touch heating elements, hot surfaces or accessories
immediately after use.
•Allow surfaces to cool prior to cleaning.
Risk of chemical burns from evaporating cleaners
•Follow the instructions of the cleaning agent manufacturer.
Defective unit Risk of injury from a defective unit
•Disconnect a defective unit from the electric mains.
•Do not operate a defective unit.
•Allow only an authorized technician to repair the unit.
Fire prevention Risk of fire from dirt and grease deposits
•Clean the unit when finished using it.
Risk of fire from overheating
•Observe the unit during operation.
Firefighting
•In the event of a fire, disconnect the unit from the electric mains.
•Use a Fire Class F fire extinguisher, never water, to extinguish
grease fires. Other fires, for instance, can be extinguished with fire
extinguishers suitable for Fire Classes A, B, C, CO2 fire
extinguishers or extinguishing media suitable for the fire class
confronted.
Unit on casters Risk of injury from a unit on casters
•Attach units with a wall side narrower than 600mm to the wall at
the installation site.
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Safety information
9Operating instructions
•Move the unit only for cleaning or maintenance.
•Lock casters during operation.
Risk of a line breaking if subjected to high tensile load
•Secure the unit with a chain as a strain relief for the power
connection at the installation site so that no tensile load is applied
to the power connection if the unit is moved.
Improper cleaning Risk of chemical burns from cleaning agent
•Follow the instructions of the cleaning agent manufacturer.
•Take appropriate protective measures when handling aggressive
cleaning agents.
Risk of falling on smooth floors
•Keep the floor in front of the unit clean and dry.
Risk of physical damage from improper cleaning
•Clean the unit after using it.
•Do not clean the unit with a high-pressure cleaner.
•Do not clean the housing with highly abrasive or chemically
aggressive cleaning agents.
•Do not clean the housing with highly abrasive sponges.
•Follow the instructions of the cleaning agent manufacturer.
•Do not cool shock the unit by cooling it abruptly.
•Do not immerse the housing in water.
Hygiene Health risk from insufficient hygiene
•Observe applicable regional hygiene regulations.
•Follow the cleaning instructions.
Improper use Risk of physical damage from improper use
•Do not operate the unit outdoors.
•Use only original accessories.
•Train operators regularly.
•Do not heat food warmer plates or tins of preserved food.
•Observe the unit during operation.
•Use only cookware that is dry outside.
•Use only appropriate and undamaged cookware.
•Remove spices, overcooked food or the like immediately.
•Do not use cookware with a rough bottom.
•Do not fry directly on the cooking plates.
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Description of the unit
10 Operating instructions
3 Description of the unit
3.1 Overview of the unit
The unit is intended for universal use in commercial kitchens for
cooking food in pots and pans on a surface. Possible uses are
cooking, stewing, frying, braising, boiling and combined frying and
cooking.
3.1.1 Floor-standing unit
d
a
b
c
Image: 4–plate cooker
a Hotplate c Nameplate
b Control panel d Equipment leg
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Description of the unit
11Operating instructions
3.1.2 Countertop unit
a
b
c
Image: 4–plate cooker
a Hotplate c Nameplate
b Control panel
3.2 Function of the operating and display elements
Symbol Operating/display element Function
"0" Output control knob •Switch off the heat zone.
"1 — 6" •Select the output level of the heat
zone.
3.3 Output levels
The heat output of the heat zone can be adjusted in increments with
the Output control knob.
Large hot-
plate (mm)
Maximum
output (W)
Output level
123456
220 x 220 2000 200 300 500 1000 1500 2000
220 x 220 2600 265 400 600 1200 1800 2600
300 x 300 2500 250 420 625 1250 1875 2500
300 x 300 4000 430 600 1000 1500 2500 4000
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Operating the unit
12 Operating instructions
4 Operating the unit
CAUTION
Risk of burns from hot surfaces
• Protect arms and hands by wearing suitable protective
gloves.
A hotplate corresponds to a heat zone.
4.1 Tips for use
In order to use the unit to its optimum and avoid heat loss:
Use suitable cooking utensils.
•Use suitable cooking utensils.
– Suitable cooking utensils are those made of metal, such as for
example steel, stainless steel, copper or cast iron, and they
should have a flat bottom.
– Unsuitable cooking utensils are those made of plastic, glass or
ceramics.
•Match the shape and size of the cooking utensils used to the heat
zone.
– The heat zone is completely covered.
•Place the lid on when cooking.
•Avoid overcooking.
•Switch off heating zones that are not required.
•Use residual heat by switching off early.
4.2 Switching the heat zone on and off
4.2.1 Switching on
Requirement Unit ready for use
Turn the Output control knob to the desired output level "1 — 6".
The heat zone is now on.
The heat zone heats up with the selected output level.
4.2.2 Switching off
Turn the Output control knob to the "0" output level.
The heat zone is now off.
The heat zone cools down.
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Operating the unit
13Operating instructions
4.3 Basic functions
CAUTION
Risk of burns from hot surfaces
• Protect arms and hands by wearing suitable protective
gloves.
The following work must be carried out before the initial
commissioning:
Burn in the hotplate made of steel.
4.3.1 Burning-in the hotplate
Heat up the heat zone to full load during the initial
commissioning in order to eliminate unpleasant smells.
Smoke can develop when particles are incinerated on the heat
zone.
• Ventilate the room well.
The blue coloration is a protective layer made of iron oxide.
Requirement Unit ready for use
1. Turn the Output control knob to full load.
The heat zone is heated.
2. Heat the heat zone for approx. 5 minutes without cooking utensils.
Maximum heating produces a bluish discoloration of the
material.
3. Turn the Output control knob to the "0" position.
The heat zone cools down.
4. Repeat the burning-in procedure in the same way for the other
heat zones.
5. Clean the heat zone (see "Cleaning the unit").
Cooker is ready.
Tip After it has been burnt in, the hotplate has an abrasion-resistant
rust protection.
Tip In order to care for the rust protection, or if it has been worn
away, apply a special care product or thin oil film.
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Operating the unit
14 Operating instructions
4.3.2 Adjusting the output
CAUTION
Risk of scalding from hot steam or hot food being cooked
Scalding from hot escaping steam or hot food being cooked can
occur, when cooking utensils are being opened, closed or
moved.
• Cooking utensils must be carefully opened, closed and
moved.
The built-in temperature monitor protects the hotplate against
overheating by automatically reducing the heat output.
The temperature monitor is not a substitute for energy-
conscious use of the unit.
Requirement Unit ready for use
1. Select the heat zone.
2. Set the Output control knob to the desired output.
The heat zone warms up.
2023201-20ABBE--

Pausing and end of use
15Operating instructions
5 Pausing and end of use
Switch off the unit during pauses and at end of use.
2023201-20ABBE--

Cleaning and caring for the unit
16 Operating instructions
6 Cleaning and caring for the unit
CAUTION
Risk of burns from hot surfaces
• Allow surfaces to cool prior to cleaning.
ATTENTION
Risk of physical damage from extremely abrupt cooling
• Do not cool shock the unit by cooling it abruptly.
ATTENTION
Risk of physical damage from improper cleaning
• Do not clean the unit with a high-pressure cleaner.
ATTENTION
Risk of physical damage through penetration of water
• Do not close the discharge channel and do not fill with water.
6.1 Preventing corrosion
•Keep the surfaces of the unit clean and with access to air.
•Remove lime, grease, starch and protein deposits from the
surfaces of the unit.
•Remove salt accumulations.
•Only expose parts made from non-rusting steel to brief contact
with highly acidic foods, spices, salts or the like.
•Avoid damaging the stainless steel surface with other metal items,
such as for example steel spatulas or steel wire brushes.
•Avoid contact with iron and steel, such as for example steel wool
and steel spatulas.
•Do not use bleaching or chlorine-containing cleaning agents.
•Clean the contact surfaces with water.
6.2 Eliminating rust spots
•Remove fresh rust spots with a mild abrasive or fine sandpaper.
•Always remove rust spots completely.
•Expose treated areas to fresh air for at least 24 hours. During this
time, do not allow any contact with greases, oils or foods so that a
new protective layer can form.
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Cleaning and caring for the unit
17Operating instructions
6.3 Cleaning the housing
ATTENTION
Risk of physical damage from improper cleaning
• Do not clean the housing with highly abrasive or chemically
aggressive cleaning agents.
• Do not clean the housing with highly abrasive sponges.
Requirement Unit switched off and cooled down
Clean the housing with warm water and commercially available
washing-up liquid.
6.4 Cleaning the hotplate
CAUTION
Risk of burns from hot surfaces
• Allow surfaces to cool prior to cleaning.
If there is an extended pause in use, clean the hotplate and
apply commercially available cooking oil thinly.
Requirement Pot removed from the hotplate
Unit switched off and cooled down
1. Clean the hotplate with warm water and a commercially available
detergent.
2. Dry the hotplate by heating it briefly.
Tip In order to care for the rust protection, or if it has been worn
away, apply a special care product or thin oil film.
6.5 Performing a visual inspection
ATTENTION
Risk of physical damage from improper inspection
• Have inspections performed by a proficient operator.
• In the event of damage or signs of wear, contact Customer
service immediately and do not operate the unit any longer.
Inspect the unit, operating elements and hotplates for visible damage.
Requirement Unit switched off and cooled down
Inspect the housing and hotplates regularly for deformation and
damage.
Visual inspection has been performed.
2023201-20ABBE--

Troubleshooting
18 Operating instructions
7 Troubleshooting
7.1 Cause of failure and the remedy
Failure Possible causes Remedy
The unit does not heat up Output control knob on "0" setting •Set the output.
Power supply interrupted •Contact the authorized technical person-
nel.
Output control knob or heating element is
defective
•Disconnect the unit from the electric
mains.
•Notify Customer service.
Insufficient heat output Output control knob or heating element is
defective
•Disconnect the unit from the electric
mains.
•Notify Customer service.
Mains phase missing •Contact technical personnel.
7.2 Nameplate
When contacting Customer service, please always provide the
following data from the nameplate:
Serial number
(SN)
Type number
(TYP)
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Carrying out maintenance
19Operating instructions
8 Carrying out maintenance
The unit is maintenance-free, there are no maintenance
requirements.
2023201-20ABBE--

Disposing of the unit in an environmentally responsible manner
20 Operating instructions
9 Disposing of the unit in an environmentally responsible
manner
Do not dispose of unit or the unit's components together with non-
recyclable waste. If the unit is disposed of together with non-
recyclable waste or treated improperly, toxic substances contained in
the unit can damage health and pollute the environment.
Dispose of the unit in accordance with local regulations for used
appliances. Clarify any open questions with the responsible agencies
(for instance, solid waste management).
Oil and fat Residue that contains oil and fat must be collected in suitable
containers and disposed of in accordance with the local disposal
regulations.
Cleaning agents Dispose of leftover cleaning agents and cleaning agent containers in
accordance with the information provided by the cleaning agent's
manufacturer. Observe applicable regional regulations.
Unit In addition to valuable materials, used electrical and electronic
equipment also contains harmful substances that were needed for
their operation and safety.
2023201-20ABBE--